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Flexible packaging lithium-ion battery module and connecting method

A technology of lithium-ion batteries and ion batteries, which is applied to battery components, circuits, electrical components, etc., can solve problems such as high cost and connection reliability risks, avoid reliability risks, simplify manufacturing difficulty and cost, and be universal sex high effect

Pending Publication Date: 2018-08-24
CHINA AVIATION LITHIUM BATTERY RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to overcome the deficiencies in the prior art, the present invention provides a soft pack lithium ion battery module and connection method with simple structure, high welding relia

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  • Flexible packaging lithium-ion battery module and connecting method
  • Flexible packaging lithium-ion battery module and connecting method
  • Flexible packaging lithium-ion battery module and connecting method

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[0030] The present invention will now be described in further detail with reference to the drawings. These drawings are all simplified schematic diagrams, which merely illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

[0031] Such as figure 1 , figure 2 The shown soft-packed lithium-ion battery module includes a number of stacked battery cells 1, a front end plate 8 provided at the front end of the battery unit 1, a rear end plate 7 provided at the rear end of the battery unit 1, and a battery The unit 1 is bundled with the belt element 6 of the front end plate 8 and the rear end plate 7. A cover plate 9 is installed on the upper part of the battery unit 1 to cover the electrical connection structure of the entire battery module so that it is not exposed to the outside.

[0032] The battery unit 1 includes a fixed frame 102 and a bus bar located above the fixed frame 102, which are att...

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Abstract

The invention relates to a flexible packaging lithium-ion battery module and a connecting method. The flexible packaging lithium-ion battery module comprises a plurality of battery units, each batteryunit comprises a fixed frame, at least two battery cells are parallelly arranged in the fixed frames, post terminal components are connected on the fixed frames in a clamping manner and comprise postterminal supporting parts, positive post terminals and negative post terminals, the positive post terminals and the negative post terminals are parallelly arranged, each battery cell is provided witha positive electrode lug and a negative electrode lug which are symmetrically arranged about the centers of the positive electrode lug and the negative electrode lug, the battery cells are characterized in that the electrode lugs are arranged along two rows, electrode lugs of each line are distributed on two sides of each post terminal, the electrode lugs are parallel to the side surfaces of thepost terminals and electrically connected onto the post terminals, a plurality battery units are laminated, and bus bars are arranged at the tops of the post terminals, used for serially connecting adjacent positive post terminals and negative post terminals and parallelly welded with the top surfaces of the post terminals. Groove hole penetrating or bending of the electrode lugs is omitted in thewelding process of the electrode lugs and the post terminals, an assembly process of the battery module is effectively simplified, bimetal materials of bus bars are omitted, and processing difficultyand cost of the bus bars are reduced.

Description

technical field [0001] The invention relates to the technical field of lithium-ion batteries, in particular to a soft-pack lithium-ion battery module and a connection method. Background technique [0002] A lithium-ion battery module includes a plurality of battery cells arranged in series and parallel, and a battery module is formed by mechanically and electrically connecting multiple battery cells. Among them, the electrical connection directly affects the performance of the battery module, so it is more important. For the pouch battery module, the electrical connection refers to the connection between the tab of the cell and the bus bar. At present, the electrical connection of the pouch battery module mainly adopts laser welding and ultrasonic welding, and laser welding is the majority. [0003] The existing common battery module, its structure includes several positive battery cells and negative battery cells, the frame of the positive battery cell is inlaid with a me...

Claims

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Application Information

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IPC IPC(8): H01M2/20H01M2/10H01M50/507H01M50/528H01M50/531
CPCH01M50/20H01M50/502Y02E60/10
Inventor 畅志远王帅锋郭其鑫牛力杜肖源
Owner CHINA AVIATION LITHIUM BATTERY RES INST CO LTD
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